Load switch power cable distribution box

Abstract

The utility model discloses a load switch power cable distribution box, which comprises a box body, a box cover matched with the box body, and at least one group of insulation supports, the insulation supports are arranged at the bottom of the box body, each group of insulation supports is provided with four installation stations for installing conductive installation sheets, and the heights of the four installation stations are not equal; the plurality of cable and wire binding posts are distributed on the conductive mounting sheet at intervals; the input end of the load switch is connected with an external cable, and the output end of the load switch is connected with the conductive mounting sheet through a cable; according to the distribution box, the cables in the box body are arranged, the utilization rate of the internal space of the distribution box is improved, the structure is simple, and use is safe.

Description

Technical Field

[0001] The utility model relates to power equipment, in particular to a load switch power cable distribution box. Background Art

[0002] The power cable distribution box is one of the important equipment in the power system. It mainly serves the cable lines of the distribution system. Through the power cable distribution box, the collection and tapping of cable lines can be realized to ensure the stable operation of the power system. This kind of equipment usually plays the role of tapping, branching, relaying or conversion, providing great convenience for the cable networking. The design of the power cable distribution box takes into account the characteristics of full insulation, full sealing and full waterproofing, ensuring its safe and reliable operation. At the same time, due to its maintenance-free characteristics, the maintenance cost and risk are reduced.

[0003] The structure of a commonly used existing load switch power cable distribution box is as Figure 1 shown, including a first box body 1 and a first box cover 1' cooperating with the first box body 1. Four groups of insulating mounting seats are installed in the first box body 1, conductive mounting bars 2 are installed on the insulating mounting seats, and wiring terminals 3 for cables or wires are arranged in the length direction of the conductive mounting bars 2. There are four conductive mounting bars 2 which are respectively connected to the external ABC and N-phase power supply lines. The external power supply lines of ABC and N-phase enter the interior of the first box body 1 from the side or back of the first box body and are respectively conductively connected to the four conductive mounting bars 2. Figure 1 As shown in, holes 2' for the external power supply lines to penetrate are provided on the back of the first box body 1. The A-phase, B-phase, C-phase and N-phase power supply lines enter the interior of the first box body 1 from the holes 2 and are respectively connected to the corresponding conductive mounting bars 2. The wiring terminals 3 on the conductive mounting bars 2 are connected to the tapped wires or cables, and the tapped cables penetrate out from the side wall or back of the first box body 1 to supply power externally.

[0004] However, although the existing such load has the characteristics of simple structure and convenient use, the internal space of the first box body 1 is not reasonably utilized, the internal structure and layout of the conductive mounting bars 2 are not compact enough, and the number of externally connected cables provided is greatly limited, resulting in an increase in the tapping cost of the cables and wires. Content of the Utility Model

[0005] In view of the above problems in the prior art, the purpose of the present utility model is to provide a load switch power cable distribution box that arranges the cables inside the box and improves the utilization rate of the internal space of the distribution box.

[0006] To achieve the above purpose, the present utility model provides the following technical solutions:

[0007] A load switch power cable tapping box, comprising a box body and a box cover mating with the box body, at least one group of insulating supports, which are installed at the bottom of the box body, and each group of insulating supports is provided with four installation stations for installing conductive mounting plates, and the heights of the four installation stations are not equal to each other;

[0008] A plurality of cable terminals, which are distributed at intervals on the conductive mounting plate for wiring of branched cables;

[0009] A load switch, the input end of which is connected to an external cable, and the output end is connected to the conductive mounting plate through a cable.

[0010] Further, each group of the insulating supports comprises two symmetrically arranged supports, and each support is provided with 4 vertical support rods at the bottom of the seat, and the heights of the four support rods are not equal to each other, and the conductive mounting plate is installed across between two symmetrically arranged support rods on the two supports.

[0011] Further, the support is made of polyvinyl chloride (PVC) material and is of an integral structure, and an installation hole for fixedly installing the support at the bottom of the box body is opened on the bottom of the seat of the support.

[0012] Further, the conductive mounting plates installed at the four installation stations of each group of insulating supports are parallel to each other in pairs, and the conductive mounting plates are installed at the tops of the support rods.

[0013] Further, each group of the insulating supports comprises a base, and two symmetrically arranged rows of vertical support rods are arranged on the base, and each row of support rods has four support rods, and the heights of the four support rods are not equal to each other, and the conductive mounting plate is installed across between the tops of two symmetrically arranged support rods with the same height, and the conductive mounting plates are parallel to each other in pairs.

[0014] Further, the conductive mounting plate is strip-shaped, and a plurality of the cable terminals are evenly distributed along the length direction of each conductive mounting plate. The cable terminals comprise a wiring screw and a wiring nut, and the wiring screw and the wiring nut are in threaded cooperation for clamping the wiring head of the branched cable.

[0015] Further, the heights of the installation stations decrease or increase in sequence, and the planar distance between two adjacent stations is 1 mm - 50 mm.

[0016] Further, the conductive mounting plate is long trough-shaped, and the inner bottom surface of the conductive mounting plate is buckled on the top surface of the support rod; the adjacent conductive mounting plates are parallel to each other in pairs, and a plurality of the cable terminals are arranged on three outer side surfaces of the conductive mounting plate.

[0017] Further, the four installation stations for installing the conductive mounting plates are sequentially marked with phase A, phase B, phase C and phase N.

[0018] Furthermore, several single-pole double-throw switches are installed side by side at the inner bottom or outer bottom of the box body. The input end of the single-pole double-throw switch is connected to the cable and wire terminal through a conductive power cable, and the output end of the single-pole double-throw switch is used to output tapped power.

[0019] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0020] 1. In this load switch power cable tapping box, an insulating support is installed inside. The insulating support is provided with work positions for installing conductive mounting pieces, and the work position heights are different from each other and are well-arranged, which can reasonably use the cables in the tapping box for layout, improve the utilization rate of the internal space of the tapping box, and has a simple structure and is safe and reliable to use.

[0021] 2. For each group of insulating supports, two symmetrically arranged supports have a conductive mounting piece installed across between two symmetrically arranged struts. By adjusting the distance between the two supports, it can adapt to the lengths of a group of conductive mounting pieces with different lengths, with high flexibility and convenient use.

[0022] 3. The support is made of integral-structured insulating plastic with low manufacturing cost. Installation holes for fixedly installing the support on the bottom of the box body are provided on the bottom of the support, so that the above support can be conveniently and detachably installed on the bottom of the box body. At this time, the installation holes of the support can pass through the bolts distributed at the bottom of the box body, and nuts cooperating with the bolts are used to fix the support. It can also be in the form of a buckle to snap the support on the bottom of the box body.

[0023] 4. Each group of conductive connecting pieces are arranged parallel to each other pairwise and have different heights, preventing the occurrence of touch short-circuit phenomena, and the parallelly arranged conductive connecting pieces facilitate the neat wiring of the internal space.

[0024] 5. The long-strip-shaped conductive mounting piece has a simple structure. The groove-shaped conductive mounting piece can increase the number of terminals as much as possible, reasonably utilize the internal space of the box body, enable more tapped cables to be installed inside the box body, and thus enable a tapping box to output more power lines.

[0025] 6. Since the heights of the conductive connecting pieces are different from each other and are not on the same height plane, the distance between the work positions for installing the conductive connecting pieces can be made very small without adjacent conductive connecting pieces, which greatly improves the wiring density and enables the wiring box to output more power lines.

[0026] 7. The A-phase, B-phase, C-phase, and N-phase are marked in sequence beside, near, or on one side of the installation station, facilitating the connection of cables to the corresponding phases during wiring. A number of single-pole double-throw switches are installed side by side at the inner bottom or outer bottom of the box body, which can realize the power switching of different output lines, facilitating the control of the output, and the mechanical structure of the single-pole double-throw switch is simple and not easily damaged. Brief Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0028] Figure 1 It is a structural schematic diagram of the existing power cable distribution box;

[0029] Figure 2 It is a schematic diagram of the internal structure principle of the box body of the present invention;

[0030] Figure 3 It is a structural schematic diagram of the single-pole double-throw switch;

[0031] Figure 4 It is a structural schematic diagram of the long-groove-shaped conductive mounting piece.

[0032] Figures 1 - 4 Among them:

[0033] 1. First box body; 1'. First box cover; 2. Conductive mounting strip; 2'. Hole; 3. Terminal; 4. Box body; 4'. Box cover; 5. Insulating support; 6. Conductive mounting piece; 7. Cable and wire terminal; 8. Mounting hole; 9. Cable; 10. Load switch; 11. Terminal mounting position; 12. Mounting hole; 13. Wiring ear. Detailed Embodiment

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0035] The core of the present invention is to provide a load switch power cable distribution box different from the prior art. By reasonably arranging the internal space of the box body, the utilization rate of the internal space of the box body is effectively improved, facilitating the output of more circuits.

[0036] Example 1:

[0037] This specific embodiment discloses a load switch power cable tapping box, as Figure 2 and Figure 3 shown, which is a schematic diagram of the internal structure principle of the box body. Since the structures of the box body 4 and the box cover 4' are the same as those in the prior art, in order to clearly show the inventive points, the box body 4 and the box cover 4' are not fully shown in the figure.

[0038] For the load switch power cable tapping box of this Example 1, a load switch 10 and a set of insulating supports 5 are installed on the bottom plate of the box body 4; this set of insulating supports 5 includes two symmetrically arranged supports. The supports are made of polyvinyl chloride (PVC) material (or other insulating hard plastics) and are of an integral structure. Mounting holes 8 for fixedly installing the supports on the bottom of the box body 4 are provided on the bottom of the supports, and the supports are detachably installed on the bottom of the box body 4 through the mounting holes 8. Four vertical support rods are provided on the bottom of each support, and the heights of the four support rods increase in sequence. A strip-shaped conductive mounting piece 6 is installed across between two symmetrically arranged support rods on the two supports. Mounting holes are provided at both ends of the conductive mounting piece 6 in the length direction, and screw holes along the axial direction of the support rods are provided at the tops of the support rods. Screws are used to pass through the mounting holes of the conductive mounting piece 6 and install them into the screw holes of the support rods, thereby realizing the installation of the conductive mounting piece 6. At the same time, when using these screws to install the conductive mounting piece 6, one end of the cable 9 connected to the load switch 10 can also be installed between the screw cap and the conductive mounting piece 6.

[0039] The power input end of the load switch 10 is connected to an external input cable, and this external input cable is not shown in the figure. The external input cable can penetrate into the interior of the box body 4 from the back or side of the box body 4. Cable and wire connection terminals 7 are installed at intervals along the length direction of the conductive mounting piece 6, and the cable and wire connection terminals 7 are connected to the branch cables of this load switch power cable tapping box.

[0040] A, B, C, and N are marked in sequence on the support rods on one side, representing the A-phase, B-phase, C-phase, and N-phase of the power respectively, where the N-phase is grounded. This marking can also be marked on the conductive mounting piece 6 or on the bottom of the box body 4 close to the conductive mounting piece 6, as long as it can indicate the power phase of the wiring position, which is convenient for installing branch cables.

[0041] In this Example 1, the distance between adjacent supports with different heights is 0 - 50 millimeters or 1 - 50 millimeters. Since the heights of the supports are different from each other, and the heights of the adjacent conductive mounting pieces 6 are also different from each other, there is no problem that the conductive mounting pieces of different phases touch each other and cause short circuits, etc. This further makes the internal structure of the box body more compact, and more output of branched power can be realized inside one box body.

[0042] Since the terminal ends of the branch cables will have a certain amount of metal exposed, the distance between adjacent supports at different heights is preferably 5-10 mm, which is convenient for achieving a better insulation effect.

[0043] An air injection hole is also provided at the top of the box body 4. The air injection hole is provided with a sealing plug. Through this air injection hole, SF6 gas (sulfur hexafluoride) can be filled into the box body to achieve a better electrical insulation effect.

[0044] A number of single-pole double-throw switches connected to the branch cables are installed side by side at the inner bottom of the box body, which can realize the power switching of different output lines, facilitate the control of the output, and the mechanical structure of the single-pole double-throw switch is simple and not easily damaged.

[0045] The load switch 10 can be selected from existing power switches such as air switches, single-pole double-throw switches, and knife-switch load switches.

[0046] Embodiment 2:

[0047] The difference in the technical solution between this Embodiment 2 and Embodiment 1 is that the load switch 10 is installed on the side wall of the box body 4, which can further make the space inside the box body more compact and reasonable.

[0048] Embodiment 3:

[0049] The structure of the load switch power cable tapping box in this Embodiment 3 is similar to that of Embodiment 1, and the difference is the structure of the conductive mounting piece 6. In Embodiment 3, the conductive mounting piece 6 is in the shape of a long groove, as Figure 4 shown.

[0050] The inner bottom surface of the conductive mounting piece 6 of this Embodiment 3 is buckled on the top surface of the support rod. A number of cable and wire terminal posts 7 are provided on the three outer side surfaces of the conductive mounting piece 6. Figure 4 The installation position of the cable and wire terminal post 7 in [[ ]] is the terminal post installation position 11, and the cable and wire terminal post 7 is welded to the terminal post installation position 11. A screw hole along the axial direction of the support rod is provided at the top of the support rod, and a screw is used to pass through the installation hole 12 of the conductive mounting piece 6 and install it into the screw hole of the support rod. The grooved conductive mounting piece 6 can increase the installation quantity of the terminal posts as much as possible, make rational use of the space inside the box body, enable more branch cables to be installed inside the box body, and thus realize that one tapping box can output more power lines.

[0051] The width of both side surfaces of the grooved conductive mounting piece 6 is smaller than the height difference between the adjacent support rods corresponding to the installation, so as to prevent the adjacent conductive mounting pieces 6 from contacting.

[0052] Wiring lugs 13 for connecting to the load switch through the cable 9 are installed on both sides of the grooved conductive mounting piece 6.

[0053] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other. Any combination of all the embodiments provided by the present utility model is within the protection scope of this utility model and will not be elaborated herein.

[0054] The above has introduced the present utility model in detail. Specific examples are used herein to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the present utility model.

Claims

1. A load switch power cable tapping box, comprising a box body (4) and a box cover (4') cooperating with the box body (4), characterized in that, It further comprises: At least one group of insulating supports (5), which are installed at the bottom of the box body (4). Each group of insulating supports (5) is provided with four installation stations for installing conductive mounting plates (6), and the heights of the four installation stations are not equal to each other; A plurality of cable and wire terminal posts (7), which are distributed at intervals on the conductive mounting plate (6) for wiring of branch cables; A load switch (10), the input end of the load switch (10) is connected to an external cable, and the output end is connected to the conductive mounting plate (6) through a cable (9).

2. The load switch power cable tapping box according to claim 1, characterized in that Each group of the insulating supports (5) comprises two symmetrically arranged supports. On the bottom of each support, there are 4 vertical support rods, and the heights of the four support rods are not equal to each other. The conductive mounting plate (6) is installed across between two symmetrically arranged support rods on the two supports.

3. The load switch power cable tapping box according to claim 2, characterized in that, The support is made of polyvinyl chloride (PVC) material and is of an integral structure. An installation hole (8) for fixedly installing the support on the bottom of the box body (4) is provided on the bottom of the support.

4. The load switch power cable tapping box according to claim 2, characterized in that, The conductive mounting plates (6) installed at the four installation stations of each group of insulating supports (5) are parallel to each other in pairs, and the conductive mounting plate (6) is installed at the top of the support rod.

5. The load switch power cable sectionalizer according to claim 1, wherein Each group of the insulating supports (5) comprises a base. On the base, there are two symmetrically arranged rows of vertical support rods, with four support rods in each row, and the heights of the four support rods are not equal to each other. The conductive mounting plate (6) is installed across between the tops of two symmetrically arranged support rods with the same height, and the conductive mounting plates (6) are parallel to each other in pairs.

6. The load switch power cable tapping box according to claim 1, 2, 4 or 5, characterized in that, The conductive mounting plate (6) is strip-shaped, and a plurality of the cable and wire terminal posts (7) are distributed at equal intervals along the length direction of each conductive mounting plate (6). The cable and wire terminal post (7) comprises a wiring screw and a wiring nut, and the wiring screw and the wiring nut are in threaded cooperation to clamp the wiring head of the branch cable.

7. The load switch power cable tapping box according to claim 6, characterized in that, The heights of the installation stations decrease or increase in sequence, and the planar distance between adjacent two stations is 1 mm - 50 mm.

8. The load switch power cable tapping box according to claim 2, 4 or 5, characterized in that, The conductive mounting plate (6) is long trough-shaped, and the inner bottom surface of the conductive mounting plate (6) is buckled on the top surface of the support rod; adjacent conductive mounting plates (6) are parallel to each other in pairs, and a plurality of the cable and wire terminal posts (7) are provided on the three outer side surfaces of the conductive mounting plate (6).

9. The load switch power cable tapping box according to claim 1, characterized in that, The four installation stations for installing the conductive mounting plate (6) are sequentially marked with phase A, phase B, phase C and phase N.

10. The load switch power cable tapping box according to claim 1, characterized in that, A plurality of single-pole double-throw switches are installed side by side at the inner bottom or outer bottom of the box body (4). The input end of the single-pole double-throw switch is connected to the cable and wire terminal post (7) through a branch cable, and the output end of the single-pole double-throw switch is used for outputting tapped power.

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